451945099 has 2 divisors, whose sum is σ = 451945100. Its totient is φ = 451945098.

The previous prime is 451945079. The next prime is 451945103. The reversal of 451945099 is 990549154.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451945099 - 2⁹ = 451944587 is a prime.

It is not a weakly prime, because it can be changed into another prime (451945069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225972549 + 225972550.

It is an arithmetic number, because the mean of its divisors is an integer number (225972550).

Almost surely, 2^451945099 is an apocalyptic number.

451945099 is a deficient number, since it is larger than the sum of its proper divisors (1).

451945099 is an equidigital number, since it uses as much as digits as its factorization.

451945099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 451945099 is about 21259.0004233501. Note that the first 3 decimals coincide. The cubic root of 451945099 is about 767.4119548016.

The spelling of 451945099 in words is "four hundred fifty-one million, nine hundred forty-five thousand, ninety-nine".